View Source Avrogen.Avro.Types.Logical.Date (avrogen v0.7.1)
This type represents the date type according to the specification.
The date logical type represents a date within the calendar, with no reference to a particular time zone or time of day.
A date logical type annotates an Avro int, where the int stores the number of days from the unix epoch, 1 January 1970 (ISO calendar).